JPS6352171B2 - - Google Patents

Description

[Detailed Description of the Invention] Traditionally, drainage channels are formed at the bottom to drain water from rice fields or to quickly collect and drain underground spring water or seepage water from rice fields in order to turn wet fields into dry fields. A large water collection opening is formed, and U-shaped groove blocks with water collection holes are lined up on the side wall.

The larger the water collection opening, the better the water collection effect and the lighter it becomes, making it easier to handle.However, on the other hand, weeds grow in this water collection opening, making it difficult to remove them. They have the drawback that the strength becomes weaker as the water collection opening is opened, and they cannot withstand earth pressure and break down. Furthermore, if they are placed on a steep slope, the drainage water will flow forcefully into the water collection opening. The main drawback was that the ditch blocks were lined up in an unstable manner and did not provide drainage or water collection.

The present invention relates to a drainage channel that solves these drawbacks, and its construction will be detailed as follows with reference to the accompanying drawings.

A lower corner of one end of the bottom 1 of a drainage block body a having a U-shaped cross section is cut diagonally to form a lower slope portion 2 in the width direction, and an upper corner of the other end is cut diagonally. An upper slope portion 3 corresponding to the lower slope portion 2 is formed in the width direction.

In the drawings, the lower slope portion 2 and the upper slope portion 3 are formed in the width direction, but the same effect may be obtained by forming slope grooves at regular intervals in the width direction.

Further, a drainage jump stand 4 is formed at one end on the lower slope portion 2 side so that drainage can jump. Such drainage blocks a are arranged to form a drainage channel A, and an oblique drainage port 8 which slopes in the length direction is provided between the lower slope part 2 and the upper slope part 3 at the bottom of the joint of the drainage block bodies a. A drainage jump stand 4 is formed in front of the diagonal drainage outlet 8.

In the figure, 5 is a sediment outflow prevention mat that prevents earth and sand from flowing out, 6 is a backflow prevention plate, and 7 is a hanging hole that also serves as a water collection hole.

Since the present invention is configured as described above, a groove is dug, and the drainage blocks a are lined up in this groove with the lower slope part 2 and the upper slope part 3 corresponding to each other to form the drainage channel A. Diagonal drainage of a gap between the lower slope part 2 and the upper slope part 3 of the bottom part 1 of the joint part of block body a, which is the size of the diagonal cutout of the lower corner of one end and the upper corner of the other end. An opening 8 is formed, and an oblique drainage opening 8 is formed.
A drainage jump platform 4 is formed in front of the drain.

That is, drainage jump stands 4 are formed at regular intervals on the bottom of the drainage channel A in front of the oblique drainage ports 8 facing in the length direction of the drainage channel A.

Underground spring water and seepage water are drained from this diagonal drainage port 8 and are drained through the drainage channel A.

In this case, since the diagonal drainage port 8 is formed diagonally, underground spring water and seepage water can be drained smoothly.

The waste water will flow through the bottom 1, but since the diagonal drain port 8 is inclined towards the length direction, the water will be drained smoothly without flowing back into the diagonal drain port 8. Since a drainage jump stand 4 is provided in front of the drainage jump stand 4, the waste water jumps at this drainage jump stand 4 and is drained in front of the diagonal drain port 8 without flowing into the diagonal drain port 8.

Thus, the present invention has the following features.

1. By simply arranging drainage blocks, it is possible to form a drainage channel that drains even underground spring water and seepage water, which greatly improves work efficiency.

2. Unlike conventional drain blocks, there is no large water collection opening formed at the bottom, so weeds do not grow and there is no need to remove them.

3. Since there is no water collection opening, it is strong and can withstand earth pressure sufficiently, so it can be used for a long time.

4. Since there is no water collection opening, there is no soil scouring, making it possible to form drainage channels on steep slopes.

5. Since the structure of the drainage block body is simple, with only a lower slope portion and an upper slope portion formed at both ends, molding is easy, mass production is possible, and the product can be provided at a low cost.

6 Not only can it be used as a drainage channel according to the present invention, but it can also be used as a ditch block for irrigation channels because a drainage jump stand is provided to jump the drainage water and prevent the drainage water from flowing back into the diagonal drainage outlet. .

In this case, the water on the back side of the irrigation channel is drained from this diagonal drainage port, so that the drainage block body is not lifted up by standing water.

[Brief explanation of drawings]

Figure 1 is a slope view of a part of the drainage canal, Figure 2 is a plan view of a part of the drainage canal, Figure 3 is a slope view of the drainage block, and Figures 4 and 5 are main parts of the drainage block. FIG. 6 is a front sectional view showing the joint of the drainage block body. 1...Bottom part, 2...Lower slope part, 3...Upper slope part, 4...
Drainage jump stand, 8...diagonal drain, a...drainage block body, A...drainage channel.

Claims (1)

[Claims] 1. A drainage jump stand is formed in the width direction of the upper surface of one end of the bottom of a drainage block body having a U-shaped cross section, and a lower slope portion is formed by cutting diagonally in the width direction of the lower corner located on the back side of this drainage jump stand. The width direction of the upper corner of the other end is cut diagonally to form an upper slope portion corresponding to the lower slope portion, such drainage block bodies are arranged side by side to form a drainage channel, and the bottom of this drainage channel is formed at regular intervals. This drainage channel is characterized by having an oblique drainage opening that slopes toward the drainage direction in the width direction of each opening, and a drainage jump platform formed above the opening.